First commit

build.js

@@ -0,0 +1,50 @@
+const fs = require('fs');
+const fetch = require('isomorphic-fetch');
+const sortby = require('lodash.sortby');
+
+const endpoint = 'https://www.cryptocompare.com/api/data/coinlist/';
+
+fetch(endpoint)
+.then(response => response.json())
+.then(json => {
+	const sorted = sortby(json.Data, o => o.CoinName);
+
+	const symbols = {};
+
+	/**
+	 * Build the JSON file based on the cryptocompare coinlist.
+	 */
+	sorted.forEach(currency => {
+		const {Name, CoinName} = currency;
+		symbols[Name] = CoinName;
+	});
+
+	fs.writeFileSync('cryptocurrencies.json', JSON.stringify(symbols, null, 2));
+	console.log('JSON File written');
+
+	/**
+	 * Build the Markdown Table of currencies in the Readme.
+	 */
+	const template = fs.readFileSync('readme.md').toString();
+	const data = JSON.parse(fs.readFileSync('cryptocurrencies.json').toString());
+
+	const newSymbols = Object.keys(data);
+
+	let table = `There are currently **${newSymbols.length} cryptocurrencies** represented*:\n`;
+	table += '\n\n';
+	table += '| Symbol | Name |\n';
+	table += '| :------ | :------ |\n';
+
+	newSymbols.forEach(symbol => {
+		table += `| \`${symbol}\` | ${data[symbol]} |\n`;
+	});
+
+	table += `\n<small><em>* Last updated: ${new Date().toUTCString()}</em></small>`;
+
+	// Look for the HTML comments in the README as a target
+	const targetRegex = /<!-- BEGIN TABLE INJECT -->(\w|\W)*<!-- END TABLE INJECT -->/gim;
+	const updated = template.replace(targetRegex, `<!-- BEGIN TABLE INJECT -->\n${table}\n<!-- END TABLE INJECT -->`);
+	fs.writeFileSync('readme.md', updated);
+	console.log('Readme Markdown Table updated');
+})
+.catch(err => console.error(err));